phyletic gradualism


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phyletic gradualism

[fī′led·ik ′gra·jə·wə‚liz·əm]
(evolution)
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References in periodicals archive ?
Gould, "Punctuated Equlilibria: An Alternative to Phyletic Gradualism," in T.
47) This neo-catastrophism 'stands in antithesis to the phyletic gradualism presented by the neo-Darwinians'.
While punctuated equilibrium (PE) reflected in the fossil record is a strong negative evidence to the underlying principle of phyletic gradualism (PG) enshrined in the evolutionary theory, the phenomenon of cell-directed mutagenesis challenges another tenet of the theory, namely, the requirement of stochastic mutations produced by extra-cellular agents to create heritable changes in the organism.
Niles Eldredge and Stephen Jay Gould, "Punctuated Equilibria: An Alternative to Phyletic Gradualism," in Models in Paleobiology, edited by T.
Gould, paleontologists, published "Punctuated Equilibria: an Alternative to Phyletic Gradualism.
Punctuated equilibrium: an alternative to phyletic gradualism.
Phyletic gradualism and punctuated equilibrium in the late Neogene planktonic foraminiferal clade Globoconella.
Without some measure of scale of the magnitude of population divergence in the ancestral populations in northern Europe from which the New Zealand founders were drawn, however, this conclusion is rooted firmly in phyletic gradualism.